function alert_sport_exist()
{
	alert("This sport exists in the database. It cannot be added.");
	}
function alert_add_games()
{
	alert("Invalid input. Max players must bigger or equal to 2. Duration cannot be smaller than 0. Input values cannot be space or nothing.");
	}
	
function alert_sport_update_1()
{
var r=confirm("You are going to update a sport. Click ok to proceed, or click cancel to cancel.");	
if(r=true) return 1;
if (r=false) return 0;
			

}

function alert_sport_update_2()
{
	
	alert("Max players cannot be smaller than 2! Duration must be bigger than 0!");
	
	}

function alert_sport_update_3()
{
	alert("Invalid input. Updated values cannot be blank or \" \" (space). They must be either \" default\" or a valid value.");
	}
